The Invite Only Add On allows you to restrict membership signups for specific membership levels and require an invite code.
After completing their membership checkout, your member will receive a unique invite code that they can share with others. You can specify the number of uses on the invite code, make it unlimited, or give the member multiple single-use codes.
A list of used/unused invite code(s) is displayed on the Membership Account page, allowing a member to see who has used their code to register and manage the unused codes tied to their account.
The admin can increase the number of invites available for a user on the “Edit User” page.